Orbital - Vol. 15 No. 3 - July-September 2023
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Synthesis and Application of Polypyrrole/DBSA/Boron Nitride Ternary Composite as a Potential Chemical Sensor for Ammonia Gas Detection

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  • Kavirajaa Pandian Sambasevam,
  • Nur Farahin Suhaimi,
  • Izyan Najwa Mohd Norsham,
  • Syed Shahabuddin,
  • Muggundha Raoov,
  • Siti Nor Atika Baharin
Kavirajaa Pandian Sambasevam
Advanced Materials for Environmental Remediation (AMER), Faculty of Applied Sciences, Universiti Teknologi MARA Negeri Sembilan Branch, Kuala Pilah Campus, 72000, Kuala Pilah, Negeri Sembilan, Malaysia
Nur Farahin Suhaimi
Advanced Materials for Environmental Remediation (AMER), Faculty of Applied Sciences, Universiti Teknologi MARA Negeri Sembilan Branch, Kuala Pilah Campus, 72000, Kuala Pilah, Negeri Sembilan, Malaysia
Syed Shahabuddin
Department of Chemistry, School of Technology, Pandit Deendayal Energy University, Knowledge Corridor, Ghandhinagar, Gujarat, India.
Muggundha Raoov
Department of Chemistry, Faculty of Science, Universiti Malaya, Kuala Lumpur, Malaysia
Siti Nor Atika Baharin
Advanced Materials for Environmental Remediation (AMER), Faculty of Applied Sciences, Universiti Teknologi MARA Negeri Sembilan Branch, Kuala Pilah Campus, 72000, Kuala Pilah, Negeri Sembilan, Malaysia
DOI: https://doi.org/10.17807/orbital.v15i3.17875
Published October 8, 2023
Keywords
  • BN,
  • gas sensor,
  • PPy,
  • self-assembly,
  • semiconductor
How to Cite
(1)
Sambasevam, K. P.; Suhaimi, N. F.; Mohd Norsham, I. N.; Shahabuddin, S.; Raoov, M.; Baharin, S. N. A. Synthesis and Application of Polypyrrole/DBSA/Boron Nitride Ternary Composite As a Potential Chemical Sensor for Ammonia Gas Detection . Orbital: Electron. J. Chem. 2023, 15, 133-141.

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Abstract

The present study demonstrates the self-assembly method of chemical oxidative polymerization of polypyrrole (PPy), polypyrrole/boron nitride (PPy/BN), and polypyrrole/dodecylbenzene sulfonic acid/boron nitride (PPy/DBSA/BN) thin films for ammonia (NH3) gas detection. The PPy, PPy/BN, and PPy/DBSA/BN thin films were comprehensively characterized using Attenuated Total Reflectance Fourier-Transform Infrared Spectroscopy (ATR-FTIR), Scanning Electron Microscopy (SEM), X-ray diffractometry (XRD) and conductivity measurement. ATR-FTIR revealed all the pertinent peaks of PPy, BN, and DBSA present in the PPy/DBSA/BN. SEM images of PPy/DBSA/BN depict well-organized morphology. PPy/DBSA/BN recorded the highest conductivity of 4.771 x 10-6 S cm-1 among the prepared polymer thin films. The obtained characterization results are in good agreement with the NH3 gas sensor measurements conducted on the PPy/DBSA/BN composite. The linear correlation coefficient between the two was found to be R2 = 0.9916, indicating a strong relationship. Furthermore, the PPy/DBSA/BN thin film demonstrated a low limit of detection (LOD) of 5.8 ppm, surpassing the OSHA threshold value for NH3 gas. This suggests that the sensor is highly sensitive to trace amounts of NH3 gas. Moreover, the PPy/DBSA/BN thin film exhibited exceptional reusability, with the ability to be used for up to 10 cycles without a significant decrease in performance. The sensor also demonstrated selectivity towards NH3 gas in the presence of common interfering species. Additionally, it exhibited long-term stability, maintaining its performance over a period of 7 days. The proposed self-assembled gas sensor has showcased remarkable performance in detecting NH3 gas at room temperature, making it a promising candidate for industrial applications.

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